Releasable hanger for hoisting equipment



Dec; 17, 1968 J. F. KA RR 3,416,830

RELEASABLE HANGER FOR HOISTING EQUIPMENT Filed Aug. 15, 1967 IN VEN TOR.3 JAMES F. KARI? ATfd/EWEY- 3,416,830 RELEASABLE HANGER FOR HOISTINGEQUIPMENT James F. Karr, 505 N. Marsalis St., Dallas, Tex. 75203 FiledAug. 15, 1967, Ser. No. 660,668 5 Claims. (Cl. 2945.5)

ABSTRACT OF THE DISCLOSURE A releasable hanger for separable connectionwith ceiling-carried hanger rods from the lower ends of which a pipe orother member or equipment is suspended, and which serves as means fromwhich a hand-operated hoist may be hung and which raises the pipesuspended therefrom to a position for facile connection to said lowerends of the rods.

Background of the invention Conventional types of rigging for apipe-raising operation, as at present known, usually causes theoperation to be carried out from two separate points. The host isoperated from one point and the hanger is secured from another point.The work is usually done from ladders and the hoist hanger must later bereplaced with a permanent hanger and hanger rod. Thus such additionalladder moving, lost motion and prior rigging are frequently makeshiftand their efiiciency in use is entirely dependent on the skill of themen in devising suitable rigging.

An object of the present invention is to provide simple, inexpensive andeasy-to-install hanger means having the characteristics above outlinedand which obviate the above-enumerated faults of prior means forhoisting members into position for connection to a hanger rod.

The invention also has for its objects to provide such means that arepositive in operation, convenient in use, easily installed in a workingposition and easily disconnected therefrom, economical of manufacture,relatively simple, and of general superiority and serviceability.

The invention also comprises novel details of construction and novelcombinations and arrangements of parts, which will more fully appear inthe course of the following description, which is based on theaccompanying drawing. However, said drawing merely shows, and thefollowing description merely describes, one embodiment of the presentinvention, which is given by way of illustration or example only.

Summary of the invention The present improved hanger 5 is adapted forreleasable connection with a hanger rod 6 conventionally installed inand hanging from the structure of a building, and having a saddle 7 onits lower end adapted to support a pipe 8 or other elongated memberabove the floor of said building. Usually, a series of saidpipe-supporting rods, suitably spaced apart, engage spaced points of thepipe. A simple form of chain hoist 9 with one end of the chain 10thereof wrapped about the pipe, is adapted to be hung from the hanger 5and manually operated to raise the pipe into register with said saddlewhen in open condition. While so held by the hoist, the pipe is enclosedby closing the saddle to pipe-supporting condition.

Brief description of the drawing In the drawing, like referencecharacters designate similar parts in the several views.

FIG. 1 is a side elevational view showing the present means inpipe-raised position and with the support saddle closed.

FIG. 2 is an enlarged plan view of the releasable hanger 3,416,830Patented Dec. 17, 1968 of said means, a portion being shown incross-section. FIG. 3 is a similarly enlarged front view, partly invertical section, of said hanger.

FIG. 4, to a smaller scale, shows the saddle portion of the hanger rod6, the parts being in separated position around the pipe.

Description of the preferred embodiment The releasable hanger 5,preferably formed of steel or other strong metal, is shown as comprisingtwo blocks 15 connected by a hinge 16 at one end with a threaded bore 17centered on the parting line 18 of said blocks and located nearer to thehinged end of the hanger than to the opposite end 19; a groove 20 ineach of the outer opposite faces of the blocks, and having bottom faceswhich converge from the lower toward the upper end of the blocks toimpart a wedge-shaped cross-sectional form to the grooved portions ofthe blocks, as shown in FIG. 3. While the blocks are preferablyconnected, as by the hinge 16, they may be completely separable andretained in register by means of a dowel or dowels or in similar ways.Since the hanger rod 6 is ordinarily threaded, the bore 17 is threadedto fit around said rod, the hanger blocks 15, when abutted on the line18, being thereby retained against longitudinal movement along the rod,especially downwardly. The threads of the rod 6 and bore 17 compriseconnecting means which may take other forms than screw threads.

A loop or locking member 21 is provided for engaging over the groovedportions of the blocks to keep them from separating and, thereby, holdthem in fixed position on the rod 6 until removed. In this instance, themember 21 comprises an end 22 having opposite converging inner edgefaces 23 converging toward each other at the same angle of convergenceas the bottoms of the grooves 20. An end edge 24 is provided at thenarrower upper end of the tapered recess, the edges 23 and 24, thereby,forming a tapered recess in said loop end 22. The member 21 alsocomprises a hanger end 25, shown as a rounded portion having an opening26 and sufficiently large to receive the ends 19 of the blocks 15 withample clearance so said member 21 may be applied over said ends andmoved or allowed to drop down to lock said blocks around the rod 6, asabove described.

A chain 27 or the like may connect the blocks 15 and the member 21 toretain the same captive to each other.

The hoist 9 that is shown is intended as conventional of chain hoists,the same having a hanger hook 28 that may be engaged with the hanger end25 of the member 21, an operating handle 29 that may be reciprocated,and the mentioned chain 10, one end 30 of which may be looped around thepipe 8 and the other end 31 hanging slack.

In operation, said chain end 30 is looped around the pipe 8 which may beon the floor or on horses and approximately beneath the upper section 32of the saddle 7 and which is mounted on the lower end of the rod 6. Thehanger 5 is then connected to said rod in suitably spaced relation tosaid saddle section 32. Now, with the chain end 31 slacked off, the hook28 is connected with the member 21. Then the handle 29 of the hoist isreciprocated to first take the slack out of the chain 10 and then pullthe pipe 8 upwardly until the same is about to enter the lower openendof said saddle section 32. Now, the lower section 33 of the saddle isapplied from beneath, around the pipe 8, so its ends 34 extend upwardlybeyond the pipe and between the arms 35 of the saddle section 32. Thebolt 36 may then be extended through the aligned holes in said arms 34and 35 are engaged in hooked ends in said arms to fasten the saddlesections in pipe-suspending relation.

The chain 10 may then be released from the pipe; the hoist removed fromits suspended engagement with the hanger loop member 21; and said memberslid upward to release the blocks 15, which may then be removed from therod 6. The above operation may then be repeated using the samereleasable hoist hanger to raise another piece of pipe or equipment, thehoisting all being done from the permanent hanger rods.

It will be understood that the terms pipe and tubular member may be usedto include any member or equipment that may be raised by the hoist; thatthe hoist, as characterized, may be power operated and the type thereofmay vary; and that the saddle is intended to include any means withwhich member or equipment, when hoisted, is connected.

Having thus described the invention, what is claimed and desired to besecured by Letters Patent is:

1. A releasable hanger for connection to a rod having a. member on itslower end which, when closed by a saddle from beneath, supports ahorizontally disposed tubular member or the like, the chain of a hoistbeing removably connected to said tubular member and the hoist beingprovided with a hook on which it is adapted to be sus pended, saidhanger comprising:

(a) a pair of blocks adapted to be engaged with 'said rod on oppositesides thereof,

(b) the rod and the block being provided with interengageable means, and

(c) a locking member having a first portion for engagement with saidhoist-suspension hook and second portions to engage the opposite facesof the blocks to retain the same in locked engagement with the rod,thereby to suspend said hoist while the same is operated to raise thetubular member toward the member on the rod.

2. A releasable hanger according to claim 1 in which the engagingportions of the rod and the blocks comprise complementary interfittedthreads on said rod and a bore partly in each block.

3. A releasable hanger according to claim 2 in which:

(a) the blocks on opposite sides thereof are provided with converginggrooves, and

(b) the second portions of the locking member define a recess withconverging side edges that fit into said grooves and, thereby, hold theblocks in rod-engaging position.

4. A releasable hanger according to claim 3 in which the first portionof the locking member has a clearance opening open to said recess andreceptive of the hook of thehoist.

5. A releasable hanger according to claim 4 in which the grooves in theblock are located between the threaded bore and one end of the blocks,and a hinge connects the opposit ends of the blocks.

References Cited UNITED STATES PATENTS 9/1942 Ratigan 29486 1/1966 Lock29482 US. Cl. X.R. 29-200

